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This question was very difficult to explain through words; if it were to be used in a question paper, it would be presented as a diagram. I intend to use the whiteboard during the inteview to explain both...
First it is important to know the molecular formula for pentane and the products of the combustion reaction so that we can write the unbalanced equation. From the prefix 'pent' we know that the hydrocarbo...
To begin, the first rule to memorize is that both the PPS and the Imperfeito do Indicativo are used in order to narrate an action that happened in the past, that ...
You are trying to find out the value of 'x' and the value of 'y'.
This means that you need to be able to take away one equation from the other.
3x + 2y = 4 - we are going to times this equ...
A stone, of mass m, falls vertically downwards under gravity through still water. At time t, the stone has speed v and it experiences a resistance force of magnitude lmv, where l is a constant. QUESTION:...
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